usr.bin/find/main.c

/*-
 * Copyright (c) 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)main.c      8.1 (Berkeley) 6/6/93";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>

#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fts.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#include "find.h"

time_t now;                     /* time find was run */
int dotfd;                      /* starting directory */
int ftsoptions;                 /* options for the ftsopen(3) call */
int isdeprecated;               /* using deprecated syntax */
int isdepth;                    /* do directories on post-order visit */
int isoutput;                   /* user specified output operator */
int isxargs;                    /* don't permit xargs delimiting chars */

static void usage __P((void));

int
main(argc, argv)
        int argc;
        char *argv[];
{
        register char **p, **start;
        int ch;

        (void)time(&now);       /* initialize the time-of-day */

        p = start = argv;
        ftsoptions = FTS_NOSTAT|FTS_PHYSICAL;
        while ((ch = getopt(argc, argv, "Hdf:hXx")) != EOF)
                switch(ch) {
                case 'H':
                        ftsoptions |= FTS_COMFOLLOW;
                        break;
                case 'd':
                        isdepth = 1;
                        break;
                case 'f':
                        *p++ = optarg;
                        break;
                case 'h':
                        ftsoptions &= ~FTS_PHYSICAL;
                        ftsoptions |= FTS_LOGICAL;
                        break;
                case 'X':
                        isxargs = 1;
                        break;
                case 'x':
                        ftsoptions |= FTS_XDEV;
                        break;
                case '?':
                default:
                        break;
                }

        argc -= optind;
        argv += optind;

        /* Find first option to delimit the file list. */
        while (*argv) {
                if (option(*argv))
                        break;
                *p++ = *argv++;
        }

        if (p == start)
                usage();
        *p = NULL;

        if ((dotfd = open(".", O_RDONLY, 0)) < 0)
                err(1, ".:");

        /* make output interperse properly with subprocesses */
        setlinebuf(stdout);

        find_execute(find_formplan(argv), start);
        exit(0);
}

static void
usage()
{
        (void)fprintf(stderr,
            "usage: find [-HdhXx] [-f file] [file ...] expression\n");
        exit(1);
}